Hitachi had 657 patents in future of work during Q2 2024. Hitachi Ltd filed patents in Q2 2024 for a power conversion device with fuse protection, an automatic analyzer preventing solute precipitation, a vehicle control device for precise positioning, an automatic analyzer with improved dispensing accuracy, and a vehicular hydraulic system with a common power source. GlobalData’s report on Hitachi gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Hitachi had no grants in future of work as a theme in Q2 2024.
Recent Patents
Application: Power conversion device and drive device (Patent ID: US20240204710A1)
The patent filed by Hitachi Ltd. describes a power conversion device that includes a power conversion circuit with upper and lower arm circuits connected in parallel for at least three phases, along with fuses connected in series with the switching elements of each phase. The device also features a short-circuit failure location determination unit and a fuse blowout-time current control unit that ensures a current flowing through a short-circuited switching element exceeds the rated current of the fuse. Additionally, the device includes mechanisms to determine blown fuses and control the driving of other switching elements to maintain proper current flow.
Furthermore, the patent extends to a drive device incorporating the power conversion device to output three-phase alternating current for driving a rotating electrical machine. The drive device includes similar components as the power conversion device, such as the short-circuit failure location determination unit and the fuse blowout-time current control unit. These components work together to identify short-circuited elements, control current flow, and ensure proper operation of the device. The patent also details specific configurations and operations related to the power conversion circuit, fuses, and control units within the drive device.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
